Front

What is light refraction?

Back

Light refraction is the bending of light as it passes from one material to another, causing objects to appear broken or displaced.

Front

What causes light to refract?

Back

Light travels at different speeds through different materials, which causes it to bend.

Front

What is an optical illusion?

Back

An optical illusion is a visual perception that tricks the brain into seeing something that is not there or seeing it differently than it actually is.

Front

What is a concave lens?

Back

A concave lens is a lens that is thinner in the middle than at the edges and spreads light rays apart.

Front

What is a convex lens?

Back

A convex lens is a lens that is thicker in the middle than at the edges and converges light rays to a point.

Front

What does transparent mean?

Back

Transparent means a material allows almost all light to pass through it, making objects behind it clearly visible.

Front

What does translucent mean?

Back

Translucent means a material allows some light to pass through, but not enough to see objects clearly.

Front

What does opaque mean?

Back

Opaque means a material does not allow any light to pass through, making it impossible to see through.

Front

What is the principle of light traveling in straight lines?

Back

Light travels in straight lines unless it encounters an obstacle or a medium that causes it to bend.

Front

What is reflection of light?

Back

Reflection of light is when light bounces off a surface, such as a mirror or water.